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OCR GCSE Computer Science Exam Questions

1.1 Systems Architecture

1.1 question 20

The following sentences describe the purpose of a CPU. Complete the sentences by filling in the missing words:
CPU stands for ________ ________ ________. It is the part of the computer that fetches and executes the ________ that are stored in ________. The CPU contains the Arithmetic ________ Unit (ALU) and the ________ Unit (CU).

5

MARKS

Mark scheme

CPU stands for Central Processing Unit. It is the part of the computer that fetches and executes the instructions that are stored in (main) memory. The CPU contains the Arithmetic Logic Unit (ALU) and the Control Unit (CU).

Exam guidance

Accept 

  • RAM/registers for memory

  • bod cache/MDR/CIR

  • do not accept ‘command’ for instructions

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